Mathematics

Mathematics

Problem

A variable plane is at a distance, kk from the origin and meets the coordinates axis in A,B,CA, B, C. Then, the locus of the centroid of △ABC\triangle ABC is a. x−2+y−2+z−2=k−2x^{-2} + y^{-2} + z^{-2} = k^{-2} b. x−2+y−2+z−2=4k−2x^{-2} + y^{-2} + z^{-2} = 4k^{-2} c. x−2+y−2+z−2=16k−2x^{-2} + y^{-2} + z^{-2} = 16k^{-2} d. x−2+y−2+z−2=9k−2x^{-2} + y^{-2} + z^{-2} = 9k^{-2}

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